Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 623 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.98 × 88 =
2. 2.997 × 995 =
3. 3.14 × 7 =
4. 4.1011 × 1037 =
5. 5.12 × 8 =
6. 6.13 × 6 =
7. 7.965 × 994 =
8. 8.108 × 108 =
9. 9.1007 × 1006 =
10. 10.992 × 993 =
11. 11.87 × 96 =
12. 12.112 × 106 =
13. 13.112 × 91 =
14. 14.14 × 9 =
15. 15.95 × 90 =
16. 16.115 × 109 =
17. 17.1007 × 962 =
18. 18.9 × 9 =
19. 19.11 × 12 =
20. 20.1031 × 1027 =
21. 21.102 × 99 =
22. 22.969 × 986 =
23. 23.999 × 967 =
24. 24.110 × 96 =
25. 25.96 × 85 =
26. 26.6 × 7 =
27. 27.971 × 970 =
28. 28.112 × 101 =
29. 29.11 × 9 =
30. 30.104 × 108 =
31. 31.6 × 8 =
32. 32.1002 × 974 =
33. 33.987 × 986 =
34. 34.12 × 12 =
35. 35.8 × 6 =
36. 36.110 × 111 =
37. 37.13 × 11 =
38. 38.1032 × 1016 =
39. 39.9 × 9 =
40. 40.112 × 102 =

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